Hacker News new | ask | show | jobs
by marcbradshaw 1768 days ago
DKIM and DMARC can be CNAMES, many services already use this, at Fastmail for example for DKIM you setup CNAMES, and we manage DKIM keys for you. SPF needs to be on your (root/organizational) domain, and you don't want (can't have) a CNAME there.